JP2020073208A - Mattress device and body position change support unit - Google Patents

Abstract

To provide a mattress device and body position change support unit capable of changing a body position of a user.SOLUTION: A mattress device 1 includes: a mat 10; a head side center cell 21 arranged at the head side center of the mat 10; a left shoulder blade cell 22 arranged on a left side of the head side center cell 21 in the mat 10; a right shoulder blade cell 23 arranged on a right side of the head side center cell 21 in the mat 10; a foot side center cell 24 arranged at a foot side center of the mat 10; a left thigh cell 25 arranged on a left side of the foot side center cell 24 in the mat 10; a right thigh cell 26 arranged on a right side of the foot side center cell 24 in the mat 10; and a control section 30 for mutually and independently supplying a fluid to the head side center cell 21, the left shoulder blade cell 22, the right shoulder blade cell 23, the foot side center cell 24, the left thigh cell 25, and the right thigh cell 26.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a mattress device having a posture changing function and a posture changing support unit.

  In recent years, the importance of home care has increased with the aging of society. In home care, a person who is not necessarily a care specialist, such as a patient's family, often provides care, and it is a social need to reduce the burden on the caregiver. In particular, in order to prevent pressure ulcers (bed sores) and to support ADL (Activities of Daily Living), it is necessary to change the patient's body position on a regular basis. It is a heavy burden.

JP, 2016-016151, A

  An object of the present invention is to provide a mattress device and a posture change assisting unit that can change the posture of a user.

  A mattress device according to the present invention includes a mat, a first fluid cell arranged in a central portion of a head side of the mat, and a second fluid cell arranged on one side of the first fluid cell in the mat. A third fluid cell disposed in the center of the mat on the foot side, a fourth fluid cell disposed on the one side of the third fluid cell in the mat, the first fluid cell, the second fluid And a control unit capable of supplying fluids to the cells, the third fluid cell and the fourth fluid cell independently of each other.

  The postural change support unit according to the present invention includes a support sheet arranged on or under a mat, a first fluid cell arranged at the head-side central portion of the support sheet, and the first fluid cell in the support sheet. A second fluid cell disposed on one side of the right and left sides of the sheet, a third fluid cell disposed on the center of the supporting sheet on the foot side, and a third fluid cell disposed on the one side of the third fluid cell of the supporting sheet. A fourth fluid cell, and a controller that can supply fluids to the first fluid cell, the second fluid cell, the third fluid cell, and the fourth fluid cell independently of each other.

  According to the present invention, it is possible to realize a mattress device and a posture change assisting unit capable of changing the posture of a user.

It is a perspective view which shows the mattress apparatus which concerns on 1st Embodiment. It is a perspective view which shows arrangement | positioning of the air cell in 1st Embodiment. (A)-(c) is a figure which shows the air cell of 1st Embodiment, (a) is a perspective view which shows a double-sided gusset type air cell, (b) is a double-sided gusseted two-stage type air cell. FIG. 4C is a cross-sectional view showing the air cell of FIG. It is a figure which shows the positional relationship of a left end cell and a user. It is a front view which shows the remote control in 1st Embodiment. (A)-(c) is a front view which shows a lateral decubitus position conversion operation. 6 is a timing chart showing the operation of supplying air to the left scapular cell and the left thigh cell in the lateral decubitus position conversion operation, with the horizontal axis representing time and the vertical axis representing the state of the solenoid valve leading to the air cell. It is a perspective view which shows a lateral position conversion operation. It is a figure which shows an automatic lateral decubitus position conversion operation. (A) And (b) is a perspective view which shows the conversion operation | movement from a lateral decubitus state to an end sitting position. It is a side view which shows the operation | movement which moves a user to a longitudinal direction. It is a side view which shows operation | movement which prevents a user's slipping down at the time of raising the back of a bed. It is a perspective view showing a trunk holding operation. (A)-(c) is a figure which shows bed leaving support operation | movement, and is the figure which looked at a user from back. (A)-(c) is a figure which shows bed leaving support operation | movement, and is the figure which looked at a user from the side. 6 is a timing chart showing the operation of supplying air to the two left end cells in the bed leaving assist operation, with the horizontal axis representing time and the vertical axis representing the state of the solenoid valve communicating with the air cell. It is a perspective view which shows the mattress apparatus which concerns on 2nd Embodiment. It is a perspective view which shows the body posture change support unit which concerns on 3rd Embodiment.

(First embodiment)
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, the first embodiment will be described.
FIG. 1 is a perspective view showing a mattress device according to this embodiment.
FIG. 2 is a perspective view showing the arrangement of the air cells in this embodiment.
3A to 3C are views showing an air cell of the present embodiment, FIG. 3A is a perspective view showing a double-sided gusseted air cell, and FIG. 3B is a double-sided gusseted two-stage type. It is sectional drawing which shows an air cell, (c) is a perspective view which shows a one side gusset type air cell.
FIG. 4 is a diagram showing the positional relationship between the leftmost cell and the user.
FIG. 5 is a front view showing the remote controller according to the present embodiment.

  As shown in FIG. 1, in the mattress device 1 according to the present embodiment, the mat 10, the twelve air cells 20 provided in the mat 10, and the air cells 20 are supplied with air and air is supplied from the air cells 20. A control unit 30 for discharging is provided. The mat 10 is placed on a bed 100 (see FIG. 13) capable of raising the back, and a user P such as a patient (see FIG. 13) sleeps on the bed 100.

  The controller 30 is provided with a main body 31, twelve air tubes 32, and a remote controller 33. A housing 34 is provided in the main body 31, and a pump (not shown), a solenoid valve (not shown), a control board (not shown), etc. are housed in the housing 34. .. The pump supplies air to the air cell 20 and discharges air from the air cell 20. The air tube 32 is connected between the pump and each air cell 20, and allows air to flow therethrough. The solenoid valve opens and closes each air tube 32. For example, when the solenoid valve is off, the air path is closed, and when the solenoid valve is on, the air path is open. The control board controls the operation of the solenoid valve.

  The remote controller 33 is pulled out from the main body 31 by a cable 35. An operation panel may be attached to the housing 34 instead of the remote controller 33. A hook 36 is attached to the top of the housing 34. The main body 31 can be attached to the bed 100 by hooking the hook 36 on the board 101 (see FIG. 13) of the bed 100.

  Hereinafter, in the present specification, the side of the mat 10 on which the user's head is arranged when the user lies on the mat 10 in the supine position, that is, on the back is referred to as “head side”, and the foot part The side on which the right hand is placed is called the "foot side", the side on which the left hand is placed is called the "left side", and the side on which the right hand is placed is called the "right side". The direction from the head side to the foot side is called "longitudinal direction", and the direction from the left side to the right side is called "width direction".

  In the mat 10, a bottom layer 11 and a top layer 12 are provided. A recess (not shown) for housing the air cell 20 is formed on the upper surface of the bottom layer 11. The depth of the concave portion is such that the upper surface of the air cell 20 and the upper surface of the bottom layer 11 form substantially the same plane when the air cell 20 is exhausted. Further, a groove (not shown) for disposing the air tube 32 is also formed on the upper surface of the bottom layer 11.

  The top layer 12 is arranged on the bottom layer 11, the air cell 20, and the tube 32. That is, the air cell 20 is sandwiched between the bottom layer 11 and the top layer 12. The top layer 12 is plate-shaped and has a substantially uniform thickness. The bottom layer 11 and the top layer 12 are formed of a flexible material. Further, the mat 10 is provided with a highly flexible cover (not shown) that integrally wraps the bottom layer 11, the air cell 20, the portion of the tube 32 disposed inside the mat 10, and the top layer 12. ..

  As shown in FIG. 2, the air cell 20 includes a head side center cell 21, a left shoulder blade cell 22, a right shoulder blade cell 23, a foot side center cell 24, a left thigh cell 25, a right thigh cell 26, an upper body left cell 27L, There is an upper body right cell 27R, left end cells 28A and 28B, and right end cells 29A and 29B. The term "air cell 20" is a general term for these twelve cells 21 to 29B. The control unit 30 includes a head side central cell 21, a left shoulder blade cell 22, a right shoulder blade cell 23, a foot side center cell 24, a left thigh cell 25, a right thigh cell 26, an upper half left cell 27L and an upper half right cell 27R. Air can be supplied to and discharged from the left end cell 28A, the left end cell 28B, the right end cell 29A, and the right end cell 29B independently of each other.

  The head-side center cell 21 is provided on the head side of the mat 10 and in the center portion in the width direction. The head-side center cell 21 is arranged so as to be located directly below the scapulae on the left and right sides when the user lies on the center of the mat 10 in the width direction. The left scapula cell 22 is arranged on the left side of the cranial center cell 21. However, the right side portion of the left scapula cell 22 is overlaid on the left side portion of the head side center cell 21. The right scapula cell 23 is located to the right of the cranial center cell 21. However, the left side portion of the right scapula cell 23 is overlaid on the right side portion of the head side center cell 21. The left scapula cell 22 and the right scapula cell 23 are symmetrical with respect to the center line C extending in the longitudinal direction of the mat 10, and are separated from each other. The left scapula cell 22 and the right scapula cell 23 are arranged so as to be located in the region directly below the left scapula and the region directly below the right scapula, respectively, when the user lies on the mat 10.

  The foot-side center cell 24 is provided on the foot side of the mat 10 and in the center portion in the width direction. The foot-side center cell 24 is arranged so as to be located immediately below the left and right thighs when the user lies on the center in the width direction of the mat 10. The left thigh cell 25 is arranged on the left side of the foot side center cell 24. However, the right side portion of the left thigh cell 25 is overlaid on the left side portion of the foot side center cell 24. The right thigh cell 26 is arranged on the right side of the foot side center cell 24. However, the left side portion of the right thigh cell 26 is superposed on the right side portion of the foot side center cell 24. With respect to the center line C, the left thigh cell 25 and the right thigh cell 26 are symmetrical and are separated from each other. The left thigh cell 25 and the right thigh cell 26 are arranged so as to be located in the region directly below the left thigh and the region directly below the right thigh, respectively, when the user lies on the mat 10.

  The upper body left cell 27L is arranged on the left side and the foot side of the left scapula cell 22. However, the head side right side portion of the upper body left cell 27L is overlapped below the left side foot side portion of the left shoulder blade cell 22. The upper body right cell 27R is disposed on the right side and the foot side of the right scapula cell 23. However, the left side of the upper body right cell 27R on the head side is overlapped with the lower side portion of the right scapula cell 23 on the right foot side. The upper body left cell 27L and the upper body right cell 27R are symmetrical with respect to the center line C and are separated from each other. The upper body left cell 27L and the upper body right cell 27R are arranged so as to be located outside the left and right upper arm portions when the user lies on the mat 10.

  The left end cells 28A and 28B are arranged along the longitudinal direction of the mat 10 at the left end of the mat 10 and are separated from each other. The left end cell 28B is arranged on the foot side of the left end cell 28A. The right end cells 29A and 29B are arranged along the longitudinal direction of the mat 10 at the right end of the mat 10 and are separated from each other. The right end cell 29B is arranged on the foot side of the right end cell 29A.

As shown in FIGS. 3A to 3C, there are a plurality of types of air cell shapes.
As shown in FIG. 3A, the head-side center cell 21, the foot-side center cell 24, the upper half body left cell 27L, and the upper half body right cell 27R are air cells 20a with both sides gussets. In the air cell 20a with a gusset on both sides, gussets 20e are provided on both sides of the main body portion 20d. When air is injected into the gusseted air cells 20a on both sides and swells, it becomes a rounded rectangular parallelepiped shape.

  As shown in FIG. 3B, the left shoulder blade cell 22, the right shoulder blade cell 23, the left femoral cell 25, and the right femoral cell 26 are two-stage gusseted air cells 20b. In the two-stage air cell 20b with a gusset on both sides, a lower subcell 20f and an upper subcell 20g are provided. The upper subcell 20g is stacked on the lower subcell 20f, and the gussets 20e on one side are joined together. Further, a hole 20h for allowing air to flow is formed between the lower subcell 20f and the upper subcell 20g. As a result, when air is injected into the two-stage air cell 20b with gussets on both sides, the unjoined side greatly expands to form a rounded fan shape.

  As shown in FIG. 3C, a one-sided gusset type air cell 20c is used for the left end cells 28A and 28B and the right end cells 29A and 29B. In the one-sided gusseted air cell 20c, the gusset 20e is provided only on one side of the main body portion 20d. As a result, when air is injected into the one-sided gusseted air cell 20c, the side where the gusset 20e is not provided is greatly bulged to form a rounded triangular prism shape. Therefore, the central portion of the mat 10 in the air cell 20c is higher than the end portion.

  As shown in FIG. 4, when air is injected into the left end cells 28A and 28B, the distance D1 between the apex 28Ap of the left end cell 28A and the apex 28Bp of the left end cell 28B is equal to or less than the left and right sides of the buttocks of the user P. It is longer than the distance D2 between the vertices Pp. That is, D1> D2. On the other hand, the distance D3 between the left end cell 28A and the left end cell 28B is shorter than the width D4 of the user's buttocks. That is, D3 <D4.

  As shown in FIG. 5, on the front surface of the remote controller 33 of the control unit 30, for example, eight operation buttons are provided. The operation button 33a (to the left) is a button to be pressed when converting the posture of the user who is lying on his / her back to the left lateral position. The operation button 33b (to the right) is a button to be pressed when converting the user's body position in the supine position to the right lateral position. The operation button 33c (hold posture) is a button to be pushed when holding the trunk of the user when the bed is raised back. The operation button 33d (stand-up) is a button that is pressed to assist the user sitting on the end of the bed to stand up. The operation button 33e (exhaust) is a button to be pressed when exhausting from the air cell. The operation button 33f (stop) is a button to be pressed when stopping the operation. The operation button 33g (power source) is a button that is pressed when the control unit 30 is powered on to enable the operation and when the power is shut off to invalidate the operation. The operation button 33h (automatic) is a button to be pressed when automatically changing the body posture according to a preset program. These operations will be described later.

  Next, the operation of the mattress device according to this embodiment will be described.

<Lateral conversion>
First, the lateral decubitus position conversion operation will be described.
FIGS. 6A to 6C are front views showing the lateral decubitus position conversion operation.
FIG. 7 is a timing chart showing the operation of supplying air to the left scapular cell and the left thigh cell in the lateral decubitus position conversion operation, in which the horizontal axis represents time and the vertical axis represents the state of the solenoid valve that communicates with the air cell.
FIG. 8 is a perspective view showing a lateral position conversion operation.
6A to 6C, the top layer 12 (see FIG. 1) and the cover are not shown.

  As shown in FIG. 6A, when the operation button 33g (power supply) of the remote controller 33 is pressed to turn on the power of the control unit 30, all the operation buttons of the remote controller 33 are operated. Further, a small amount of air is supplied to the head-side center cell 21, and the other air cells 20 are in an exhausted state. At this time, the upper surface of the mat 10 is substantially flat. The purpose of supplying a small amount of air to the head-side central cell 21 is to improve the sleeping comfort of the user P. This state is the initial state.

In the initial state, the user P is lying on the center of the mat 10 in the width direction. From this state, the posture of the user P is changed to the right lateral position.
First, as shown in FIGS. 1 and 5, the caregiver presses the operation button 33b (to the right) of the remote controller 33. As a result, as shown in FIG. 2, FIG. 6 (b) and FIG. 7, the pump of the control unit 30 operates and air is supplied to the head side central cell 21 and the left shoulder blade cell 22 via the air tube 32. At the beginning, these cells start to swell. Then, after a certain time Δt has elapsed, air is started to be supplied from the control unit 30 to the foot side center cell 24 and the left thigh cell 25 via the air tube 32, and these cells start to swell. The time Δt is, for example, 15 seconds. However, the optimum value of the time Δt differs depending on the pump capacity, the weight of the user P, and the like. In this way, the control unit 30 can realize a state in which air is supplied to all of the head-side center cell 21, the left scapula cell 22, the foot-side center cell 24, and the left thigh cell 25. The supply of air to the head-side central cell 21 may be started after the supply of air to the left scapula cell 22 is completed. Similarly, after the air supply to the left thigh cell 25 is finished, the air supply to the foot side center cell 24 may be started.

  As a result, as shown in FIGS. 6B and 8, the expanding air cell 20 pushes up the left shoulder blade and the left thigh of the user P through the top layer 12, and the body of the user P is right. Lean on. At this time, the left scapula cell 22 expands, the head side center cell 21 expands, the left thigh cell 25 expands, the foot side center cell 24 expands, and the left scapula cell 22 and the left thigh cell 25 are Since it is a stepped cell, the body of the user P leans to the right more than usual. Moreover, as shown in FIG. 7, the left shoulder blade of the user P is pushed up in advance, and after the user's eyes are directed to the right side, the left thigh is pushed up. As a result, it is possible to reduce discomfort for the user and ensure safety.

  Then, as shown in FIG. 5, when the caregiver presses the operation button 33f (stop) of the remote controller 33, or when the head side center cell 21, the left shoulder blade cell 22, the foot side center cell 24 and the left thigh cell 25 are When inflated to a predetermined size, the control unit 30 stops the supply of air to these cells. As a result, as shown in FIG. 8, the body position of the user P is the lateral decubitus position facing the right side.

  In this way, by converting the posture of the user P from the supine position to the lateral position, it is possible to prevent the occurrence of pressure ulcer. Moreover, since the buttock is lifted by lifting the left shoulder blade and the left thigh, the caregiver can easily access the buttock of the user P. As a result, work such as changing diapers is facilitated.

  Thereafter, as shown in FIG. 5, when the caregiver presses the operation button 33e (exhaust) of the remote controller 33, the pump of the control unit 30 operates to discharge air from the left scapula cell 22 and the left thigh cell 25. .. As a result, these cells contract and the tilt angle of the user P decreases. Then, if the caregiver presses the operation button 33f (stop), the exhaust is stopped and the angle of inclination at that time is fixed. If the caregiver does not press the operation button 33f (stop), the upper surface of the mat 10 returns to the horizontal position.

After that, when the caregiver presses the operation button 33g (power supply) of the remote controller 33 to shut off the power supply of the control unit 30, the electromagnetic valve is closed and the pump is stopped, and the air injected into each air cell 20 is enclosed as it is. It As a result, the state of each air cell 20 is fixed. When the power of the control unit 30 is cut off, the operation buttons other than the operation button 33g (power supply) are disabled.
In the above description, the example in which the body position is the right lateral decubitus position has been described, but the same applies to the case where the body position is left lateral decubitus.

  In the above operation, the left scapula cell 22 contacts the left shoulder blade of the user P, and the left thigh cell 25 contacts the left thigh portion of the user P. Since the scapula and thigh are hard parts without joints, the expansion of the cells is not absorbed by the bending of the joints by the user P, and the entire body of the user P can be displaced.

  Further, since the left scapula cell 22 and the left thigh cell 25 are each the two-stage type air cell 20b shown in FIG. 3B, the left half of the user P can be lifted high. As a result, a large tilt angle of, for example, about 75 ° can be realized.

  Further, when the left scapula cell 22 and the left thigh cell 25 are inflated, the head-side center cell 21 and the foot-side center cell 24 are also inflated, so that the shoulders and thighs are not cramped and the user feels uncomfortable. Can be reduced.

  On the other hand, as shown in FIG. 6C, if the head-side center cell 21 and the foot-side center cell 24 are not inflated, the depression formed by the user P by the mat 10 and the left shoulder blade cell 22. , And it falls into the recess formed by the mat 10 and the left thigh cell 25, and the shoulders and thighs become cramped and feel uncomfortable.

Next, an applied operation of the lateral recumbent position conversion will be described.
First, the automatic recumbent position conversion by the timer will be described.
FIG. 9 is a diagram showing an automatic lateral recumbent position conversion operation.

  In order to perform this operation, a timer is built in the control unit 30. In addition, a predetermined program is stored in the control unit 30. Then, when the caregiver presses the operation button 33h (automatic) of the remote controller 33, the control unit 30 automatically operates to automatically convert the posture of the user P at an appropriate time interval. For example, as shown in FIG. 9, the inclination angle of the width direction of the user P is 0 ° (horizontal state) to + 25 ° (inclined to the right by 25 °) at a predetermined time, for example, at intervals of 30 minutes. , + 50 °, + 75 °, + 50 °, + 25 °, 0 °, -25 ° (inclined to the left by 25 °), -50 °, -75 °, -50 °, -25 °, 0 ° in this order. Change. Accordingly, for example, when the user is sleeping on the mat 10 at night, the posture of the user P can be changed without the need for the caregiver. As a result, pressure ulcer of the user P can be prevented and the caregiver's burden can be reduced.

  A breathing sensor may be provided near the bed and the posture may be changed when the user P stops breathing. As a result, the user P can be encouraged to breathe and the symptoms of apnea syndrome can be reduced. Alternatively, a microphone may be provided on the head side of the bed, and the body position may be changed when snoring is detected. Thereby, snoring can be suppressed.

Next, the operation of sitting on the end of the bed from the lateral recumbent position will be described.
10A and 10B are perspective views showing the conversion operation from the lateral recumbent position to the end sitting position.

  First, as shown in FIG. 10A, by the above-described operation (see FIGS. 6A and 6B), the posture of the user P is changed from the supine state to the right lateral decubitus state. At this stage, the left foot of the user P is above the right foot.

  Next, as shown in FIG. 10B, the bed 100 is raised back. At this time, the user P lowers both feet from the right end of the bed 100 to the floor by himself or by the caregiver. Then, by using the twisting motion to raise the upper body, it is possible to easily sit on the end of the bed. As a result, the range of action of the user P is expanded and ADL (daily life movement) is supported.

Next, an operation of moving the user P in the height direction, that is, the longitudinal direction of the mat 10 while the user P is lying down will be described.
FIG. 11 is a side view showing the operation of moving the user in the longitudinal direction.

  Normally, on the back of a person, the buttocks are more prominent than the back and thighs, so when trying to move the supine user P in the longitudinal direction, a large frictional force is generated between the buttocks and the mat. To do. Therefore, it is extremely difficult for the caregiver to move the user in the longitudinal direction by himself.

  Therefore, in the present embodiment, as shown in FIG. 11, the control unit 30 inflates the head-side center cell 21 and the foot-side center cell 24. As a result, the shoulder blades and the left and right thighs of the user P are lifted from the mat 10 and the buttocks Pb float. As a result, the frictional force between the buttocks and the mat 10 becomes small, and the caregiver can put the arm between the mat 10 and the user P, and the user P can be easily moved in the longitudinal direction. become.

Next, an operation for preventing the user from sliding down to the foot side when the bed is raised back will be described.
FIG. 12 is a side view showing an operation for preventing the user from slipping down when raising the back of the bed.

  As shown in FIG. 12, when the bed 100 is back-raised, if the bed 100 does not have a foot-raising function, the user P slides down to the foot side. Therefore, in the present embodiment, the control unit 30 inflates the foot-side center cell 24, and then raises the bed 100 back. As a result, it is possible to prevent the buttocks Pb of the user P from being caught between the back plate of the bed 100 and the foot-side center cell 24 and sliding down to the foot side. A dedicated air cell may be provided at the position of the knee to inflate it.

<Main body retention>
Next, the trunk holding operation will be described.
FIG. 13 is a perspective view showing a trunk holding operation.

  As shown in FIG. 13, the mat 10 of this embodiment is placed on the bed 100. The bed 100 is a bed capable of raising its back. That is, of the floor plate of the bed 100, the portion 102 on which the upper half of the user P rides is inclined upward. Thereby, the upper half of the user P can be raised. Further, of the floor plate of the bed 100, the portion 103 on which the knee of the user P rides is bent so as to be convex upward. This can prevent the user P from sliding down to the foot side when the upper half of the user P is raised.

  Then, the mattress device 1 according to the present embodiment holds the trunk of the user P so that the user P does not lean to the left and right when the bed 100 performs the back raising operation. Hereinafter, this operation will be described in detail.

  First, as shown in FIG. 5, the caregiver presses the operation button 33c (holding posture) of the remote controller 33. As a result, as shown in FIGS. 2 and 13, the control unit 30 supplies air to the upper body left cell 27L and the upper body right cell 27R to inflate these cells. The upper body left cell 27L and the upper body right cell 27R bulge outside the upper arm of the user P, and hold the upper portion of the user P's upper body from both sides via the top layer 12 (see FIG. 1).

  Next, the caregiver operates the bed 100 to raise its back. This causes the portion 103 to bend so as to be convex upward, and then the portion 102 rises up. As a result, the upper half of the body of the user P gets up and can take a sitting posture. At this time, since the trunk of the user P is held from the left and right by the upper body left cell 27L and the upper body right cell 27R, leaning to the left and right can be suppressed. As a result, it is possible to prevent the user P from falling along with the back raising operation. In addition, since the caregiver does not have to support the user P at all times during the back raising operation, the caregiver's burden is reduced.

<Support for getting out of bed>
Next, the bed leaving support operation will be described.
FIGS. 14A to 14C are diagrams showing the bed leaving support operation, which is a diagram of the user seen from behind.
FIGS. 15A to 15C are diagrams showing the bed leaving operation, which is a view of the user from the side.
FIG. 16 is a timing chart showing the operation of supplying air to the two left end cells in the bed leaving assist operation, with the horizontal axis representing time and the vertical axis representing the state of the solenoid valve communicating with the air cell.

  As shown in FIGS. 14A and 15A, in the initial state, a small amount of air is injected into the head-side central cell 21 (see FIG. 2), and the other air cells 20 are in an exhausted state. .. Then, the user P is sitting on the left end of the bed 100. At this time, as shown in FIG. 4, the user P, for example, follows the guide (not shown) drawn on the cover of the mat 10 to place the buttocks Pb directly above the left end cell 28A and immediately above the left end cell 28B. And the two apexes Pp of the buttocks are arranged between the apex 28Ap of the left end cell 28A and the apex 28Bp of the left end cell 28B. Also, place your feet behind your knees as much as possible.

  From this state, as shown in FIG. 5, the caregiver presses the operation button 33d (rise). Thereby, as shown in FIGS. 1 and 17, the control unit 30 alternately and intermittently supplies air to the left end cells 28A and 28B. As a result, as shown in FIGS. 14 (b) and 15 (b), the left end cells 28A and 28B alternately inflate slightly, and the buttocks of the user P are pushed up. Further, in the left end cells 28A and 28B in the inflated state, the width direction central portion side of the mat 10 is higher than the end edge side, so that the head and upper body of the user P are pushed forward.

  At this time, the left end cells 28A and 28B located on the left and right when viewed from the user P alternately inflate, so that the trunk of the user P is swung to the left and right in small steps. As a result, the user P unconsciously tries to correct the posture, and tries to bring the center axis Lp of the trunk closer to the center line Lc between the left end cell 28A and the left end cell 28B. As a result, the central axis Lp of the trunk of the user P does not greatly incline to the left and right with respect to the central line Lc. Therefore, the user can be prevented from falling to the left or right.

  Then, as shown in FIGS. 14 (c) and 15 (c), when the left end cells 28A and 28B are sufficiently inflated, the upper half of the user P is largely pushed forward. As a result, the user P can stand up with his / her upper body positioned directly above the foot with a little further self-help or assistance. In this way, it is possible to assist the user P in leaving the bed.

  In addition, as shown in FIG. 16, in the above-mentioned bed assisting operation, a pressure sensor is provided in each of the left end cells 28A and 28B, and the time for supplying air to the left end cell 28A based on the detection results of these pressure sensors. The duty ratio {tA / (tA + tB)} between tA and the time tB for supplying air to the left end cell 28B may be controlled. In this case, for example, more air may be supplied to a cell having a lower pressure so that the pressures of the two cells may be uniform, or more air may be supplied to a cell having a higher pressure. The height of one cell may be uniform. Which method has less discomfort for the user P depends on the physique and physical ability of the user P.

  In the above description, the user P is sitting on the left end of the bed 100, and the example in which the left end cells 28A and 28B are inflated to support the standing motion of the user P is shown. It is the same. That is, when the user P is sitting on the right end of the bed 100, the right end cells 29A and 29B are inflated to assist the user P to stand up.

<Effect>
Next, the effect of this embodiment will be described.
As described above, according to the mattress device according to the present embodiment, the lateral decubitus position conversion for changing the posture of the user from the back to the side, supporting the trunk when the user's upper body is raised, and supporting the user to stand up It is possible to carry out bed leaving support.

  In the lateral decubitus position conversion, the control unit 30 inflates the head side central cell 21, the left shoulder blade cell 22, the foot side central cell 24, and the left thigh cell 25, so that the user's posture is changed from the supine position to the right lateral position. Can be converted to. Similarly, the control unit 30 can convert the head-side center cell 21, the right scapula cell 23, the foot-side center cell 24, and the right thigh cell 26 into the left lateral decubitus position.

  At this time, the left scapula cell 22, the right scapula cell 23, the left thigh cell 25, and the right thigh cell 26 are two-stage type air cells, so that the half body of the user P can be lifted high and the inclination angle can be increased. can do. Further, since the left scapula cell 22 and the right scapula cell 23 partially overlap with the head-side center cell 21, and the left thigh cell 25 and the right thigh cell 26 partially overlap with the foot-side center cell 24, The tilt angle can be further increased.

  Also, by inflating the head-side center cell 21 and the foot-side center cell 24, which are arranged at the center in the width direction of the mat 10, together with either of the left and right air cells, the shoulder and thigh of the user become cramped. Can be prevented and the user's discomfort can be reduced.

  Furthermore, by starting the supply of air to the air cells contacting the scapula and then starting the supply of air to the air cells contacting the thigh after a certain period of time Δt, the user's posture is improved. It is possible to guide the line of sight in a tilting direction before it is fully tilted. As a result, it is possible to prevent the user from suddenly feeling and improve safety.

  The pressure ulcer can be prevented by converting the posture of the user from the supine position to the lateral position. Further, by lifting the scapula and thigh, the buttocks float, which facilitates work such as changing diapers. Furthermore, after the user's posture is in the lateral recumbent position, the back-raising function of the bed is operated, so that the user can easily convert to the end sitting position.

  Further, by inflating only the head-side center cell 21 and the foot-side center cell 24, the user can be lifted in the supine position. As a result, it becomes easy to access the buttocks and it becomes easy to move the user in the height direction. Furthermore, by inflating only the foot-side center cell 24, it is possible to prevent the user from shifting to the foot side when the back raising function of the bed is used.

  In the trunk retention, when the back raising function of the bed is operated and the user's upper body is raised, the control unit 30 supplies air to the upper body left cell 27L and the upper body right cell 27R to inflate, The trunk of the user can be sandwiched and held from both sides. As a result, the user can be prevented from falling to the left or right during the back-raising operation. Further, since the user can be held at a high position by sandwiching the upper arm of the user, the stability is high.

  In assisting getting out of bed, when the user is sitting on, for example, the left end of the bed, the distance D1 between the vertices of the left end cells 28A and 28B into which the air is injected is the left and right vertices of the buttocks of the user P. It is longer than the distance D2 between Pp, and the distance D3 between the left end cell 28A and the left end cell 28B is shorter than the width D4 of the user's buttocks. Then, the control unit 30 inflates the left end cells 28A and 28B or the right end cells 29A and 29B, so that the user P can be supported to stand up.

  At this time, since the left end cell 28A and the left end cell 28B are independent of each other and air does not flow from one to the other, one air cell does not bulge extremely larger than the other air cell. As a result, the user's buttocks are sandwiched between the two left end cells 28A and 28B, and the posture is stabilized.

  Further, the control unit 30 alternately supplies air to the left and right cells as viewed from the seated user, for example, the left end cell 28A and the left end cell 28B, so that the trunk of the user is nicked. Shake left and right to wake up the user's sense of balance. As a result, it is possible to prevent the upper body of the user from tilting greatly to the left and right, and to prevent the user from falling.

  Further, according to the mattress device 1 according to the present embodiment, since the lateral recumbent position conversion operation and the bed support operation are possible, the above-mentioned conversion from the supine position to the lateral recumbent position and the lateral recumbent position using the back raising function of the bed are performed. The user who is lying on his back can be made to stand up by continuously performing the conversion to the end sitting position and the support for leaving the bed from the end sitting position.

  Further, in the mattress device 1 according to the present embodiment, in the control unit 30, the remote controller 33 is separated from the main body unit 31, so the main body unit 31 is arranged in a dead space where access is inconvenient, and only the remote controller 33 is provided by the caregiver. It can be placed in a position where it can be reached. Accordingly, for example, even when home care is provided and the space around the bed is limited, the space can be effectively used and the burden on the caregiver can be reduced. Further, since the hook 36 is attached to the main body 33, it can be hooked on the board 101 of the bed 100. Thereby, the dead space around the bed 100 can be effectively utilized.

  As described above, the mattress device according to the present embodiment can support various actions of the user. This can support the user's ADL and reduce the burden on the caregiver.

(Second embodiment)
Next, a second embodiment will be described.
FIG. 17 is a perspective view showing the mattress device according to this embodiment.

  As shown in FIG. 17, in the mattress device 2 according to this embodiment, the main body 31 of the controller 30 is embedded in the bottom layer 11 of the mat 10. However, the remote controller 33 is pulled out to the outside of the mat 10 via the cable 35.

  According to the present embodiment, by not disposing the main body 31 of the control unit 30 outside the mat 10, it is possible to save space as compared with the first embodiment described above. As a result, the mattress device 2 can be installed even when there is almost no space around the bed. The configuration, operation, and effect of this embodiment other than those described above are the same as those of the above-described first embodiment.

(Third Embodiment)
Next, a third embodiment will be described.
FIG. 18 is a perspective view showing a posture conversion support unit according to this embodiment.

  As shown in FIG. 18, a support sheet 40, an air cell 20, and a control unit 30 are provided in the body position conversion support unit 3 according to this embodiment. The support sheet 40 is made of a strong and soft material, and has a rectangular sheet shape. The air cell 20 and the air tube 32 are attached to the support sheet 40. The type and arrangement of the air cells 20 are the same as those in the above-described first embodiment. The configuration of the control unit 30 is also similar to that of the first embodiment described above.

  The support sheet 40 is installed and used on the existing mat 110. The mat 110 is a normal mat having no active function and is placed on the bed 100 (see FIG. 13). The outer shape of the support sheet 40 is the same as the mat 110 or smaller than the mat 110. Therefore, when the support sheet 40 is installed on the mat 110, the support sheet 40 does not protrude from the mat 110. On the other hand, the control unit 30 is arranged outside the mat 110 and is hooked on the board 101 of the bed 100, for example.

  The postural change support unit 3 according to the present embodiment can be installed on the existing mat 110. Therefore, it is possible to reduce the cost of the posture changing support unit 3 itself and to continue to use the mat 110 that the user is accustomed to using. As a result, there are few obstacles to the introduction. The configuration, operation, and effect of this embodiment other than those described above are the same as those of the above-described first embodiment.

  When the mat 110 is thin, the support sheet 40 may be arranged under the mat 110, that is, between the bed 100 and the mat 110. Further, also in the present embodiment, the control unit 30 may be provided in the support sheet 40, as in the second embodiment described above.

  In each of the above-described embodiments, an example has been shown in which air is supplied to each air cell to inflate it, but the present invention is not limited to this, and the substance supplied to the cell may be a fluid. For example, instead of air, a gas such as an inert gas or a liquid such as water or oil may be used. Further, mechanical means such as an actuator may be provided instead of the air cell.

  Each of the above-described embodiments is an example embodying the present invention, and the present invention is not limited to these embodiments. For example, the present invention also includes addition, deletion, or modification of some components or operations in each of the above-described embodiments.

  1, 2: Mattress device, 3: Posture change support unit, 10: Mat, 11: Bottom layer, 12: Top layer, 20, 20a, 20b, 20c: Air cell, 20d: Main body part, 20e: Machi, 20f: Lower stage Subcell, 20g: upper subcell, 20h: hole, 21: head side center cell, 22: left scapula cell, 23: right scapula cell, 24: foot side center cell, 25: left thigh cell, 26: right thigh cell, 27L: upper body left cell, 27R: upper body right cell, 28A, 28B: left end cell, 28Ap, 28Bp: vertex, 29A, 29B: right end cell, 30: control unit, 31: body unit, 32: air tube, 33 : Remote control, 33a, 33b, 33c, 33d, 33e, 33f, 33g, 33h: operation button, 34: housing, 35: cable, 36: hook, 40: support Sheet, 100: Bed, 101: Board, 102, 103: Part, 110: Mat, C: Center line, D1: Distance between vertices of left end cell, D2: Distance between left and right vertices of buttocks, D3: Left end Distance between cells, D4: width of buttocks, Lc: center line, Lp: central axis, P: user, Pb: buttocks, Pp: apex of buttocks, Δt, tA, tB: time

Claims (8)

Matt and
A first fluid cell disposed in the widthwise central portion of the mat;
A second fluid cell disposed on one of the left and right sides of the first fluid cell in the mat;
A control unit capable of supplying fluid to the first fluid cell and the second fluid cell independently of each other;
Equipped with
The mattress device, wherein a portion of the second fluid cell overlaps a portion of the first fluid cell.   The mattress device according to claim 1, wherein the second fluid cell is disposed in a region directly below the left shoulder blade of the person or a region directly below the right shoulder blade of the person when the person is supine on the mat.   The mattress according to claim 1, wherein the second fluid cell is arranged in a region directly below the left thigh of the person or a region directly below the right thigh of the person when the person is supine on the mat. apparatus.   The mattress device according to claim 1, wherein the widthwise length of the first fluid cell is shorter than the widthwise length of the mat. A support sheet arranged on or under the mat,
A first fluid cell disposed in the widthwise central portion of the support sheet;
A second fluid cell disposed on one of the left and right sides of the first fluid cell in the support sheet;
A control unit capable of supplying fluid to the first fluid cell and the second fluid cell independently of each other;
Equipped with
A posture changing support unit in which a part of the second fluid cell overlaps a part of the first fluid cell.   The postural change support according to claim 5, wherein the second fluid cell is arranged in a region directly below the left shoulder blade of the person or a region directly below the right shoulder blade of the person when the person lies on the support sheet. unit.   The said 2nd fluid cell is arrange | positioned in the area | region just under the said person's left thigh, or the area just under the said person's right thigh, when a person lies on the said support sheet. Posture change support unit.   The mattress device according to claim 4, wherein the widthwise length of the first fluid cell is shorter than the widthwise length of the support sheet.